from flask import Flask,jsonify,request

• return result as in form of json

return jsonify(message="great work",name="_name_here_")

• by default status code is 200 ok, above code will work same as below

return jsonify(message="great work",name="_name_here_"),200

• catch the data wwhich is passed along with url

app.route("/parameters")
def parameters():
	name=request.args.get("name")
	age=int(request.args.get("age"))
	if age<18:
		return jsonify(message="hi "+name+ ', you are not old,hence you are not able to accesss this page'),401
	# by default status code is 200 or ok 
	return jsonify(message="hello "+name+" you are old.")

• url parameters

@app.route("/url_parameter/<string:name>/<int:age>")
# def url_parameter(name,age):  same work as below
def url_parameter(name:str,age:int):
	if age<18:
		return jsonify(message="hi "+name+ ', you are not old,hence you are not able to accesss this page'),401
	# by default status code is 200 or ok 
	return jsonify(message="hello "+name+" you are old.")

• Flask + marshmallow for beautiful APIs(if jsonify will not work then use one more this)

Securing your web api with JWT(JSON Web Tokens)

- pip3 install Flask-Login
- pip3 install Flask-User # role based

--- i used below
pip3 install flask-jwt-extended

-- for mail

pip3 install Flask-Mail